You won't succeed. Even if you do...[Gabe shakes his head. He knows things. he knows the Winchester's destiny, and he knows it can't be stopped, won't be stopped. Even if Dean succeeded in killing Sam, the angels would bring him back. Sam wasn't expendable, not by a long shot]
Hey, it's none of my business. [Gabe puts his hands up] But are you sure killing your brother is how you want to play this?